Understanding the technical side of HaarpIt is a cold hard fact that even if the entire electrical grid output was used for weather modification, there would be insufficient power available to do much of anything. The distances are too wide, volumes too huge, and locations in relation to a transmitter seldom ideal. Yet weather modification is a reality. How? This article explains how it can be done, from a scientific perspective.
Most everyone has heard that silicon is a semiconductor. A semiconductor only permits current flow when the conditions are correct.
In a typical silicon semiconductor, it's current flow characteristics are determined by the addition of doping agents - these are mixed with the silicon and become part of it's molecular matrix during the manufacturing process. The two most common doping agents are arsenic and boron.
Doping agents cause the silicon to have an excess number of electrons in the P doped regions, and a deficiency of electrons in the N doped regions. A small electronic charge applied to the junction between the N and P regions will cause a cascade effect of a much greater magnitude if a power supply voltage is applied to one side of the piece of silicon, and a load is applied on the other side. That is what makes a transistor, the heart of a basic amplifier.
How HAARP works, and a possible real reason why there are "chem trails"
Most people do not realize this, but common air - the air we all breathe, is also a semiconductor, and it can be made to behave just like a piece of silicon if the right doping agents are added to it.
If you wish to modify the electrical characteristics of the atmosphere, you need to use an aircraft to disperse the doping agents at a high altitude. If you then take a pair of huge transmitters, such as haarp, and transmit a frequency to a specific region which is timed to phase cancel against the opposing transmitter the frequencies they transmit will vanish and leave a standing DC bias voltage in the atmosphere at the selected region.
This voltage is the electrical equivalent of the electronic charge applied between the N and P regions of a silicon transistor. The chem trails are the doping agent, and the ionosphereis the power supply.
A flow of current is then is triggered from the ionosphere to the earth below. Because the ionosphere has virtually endless power to give, it is possible to take a transmitter pair with a radiated power of only a couple of billion watts, and use it to trigger a cascade of trillions of watts. That is enough to heat the atmosphere, and trigger a change of climate, storms, ect. It is very important to make sure you do not exceed certain limits, or "clip" the atmosphere, or you will cause a lightning bolt of a sort not ever witnessed. But if kept below certain thresholds, a great amount of atmospheric heating can be caused and no one on the ground would ever notice a thing.
This of course would cause very odd electrical readings in the atmosphere. So someone should have been able to detect this, right? Nasa did. They noticed several hurricanes, including Katrina, were not electrically normal.These were the only 3 hurricanes to ever be that way. This could be done using the method mentioned here.
The following image is a drawing of how a Haarp type system could be set up to work.

Someone on Godlike Productions opened a thread about a weather anomaly in progress out East. I clicked on the link and my jaw dropped.
There, clearly showing in one of the frames of weather radar was an obvious weather modification artifact. THIS IS NOT HAARP. Whatever produced that wall of clouds had to generate the energy on site, this type of anomaly is not what you would expect from a signal collision. This would be caused by a microwave beam, or other short wavelength beam of unbelievable power. If this really is as artificially created as it appears to be, it can only mean that we have a capability to produce electricity on a scale that has never been publicized, and get it into the air in the form of transmitted energy. If anyone can explain this, please contact me. The fact that the anomaly appears in only one frame means that the atmosphere did not want to produce the clouds until strongly encouraged to. Since each frame represents 15 minutes actual time, the max length of time for that line formation to form and disappear would be 30 minutes. Quite an odd anomaly, I cannot explain this.

I apologize for the shakiness, (I shot video of the radar on the computer with a pocket camera, replayed the video and did screen captures to make this gif) so it is not the best. But it clearly shows, in the lower right portion of the frames, a weather anomaly originating out of the South West corner of Delaware.
Here, I cut the frame for reference

Here I cut the image down to include only the anomaly